ZnO Growth Properties in ZnO/SnS Heterojunction by a Combination of ECD and CBD Method

Yunus, Sami; Sahdan, Mohd Zainizan; Kamaruddin, S.A.; Rahim, M. S.; Supee, Aizuddin; Ichimura, M.

doi:10.1109/wscar.2016.22

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…These morphological changes imply that the nature of seed layers dictates the morphology of ZnO nanorods grown, as suggested in the literature reported previously. [22] The crystallinity and the surface structure of the all seed layers prepared were examined through XRD analysis and AFM observation, respectively. The crystallinity was evaluated using the full width at half maximum (FWHM) of peaks that are derived from ZnO (002).…”

Section: Methodsmentioning

confidence: 99%

Seed layer morphology influencing on ZnO nanorod growth by hydrothermal synthesis

Zhang

Honda

Ichikawa

2018

Trans. Mat. Res. Soc. Japan

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The structure of seed layers has been considered as a significant factor to dictate the subsequent growth of ZnO nanorods. We carefully studied seed layer structures such as crystallinity, surface crystal orientations, and grain sizes to investigate their effect on ZnO nanorod growth during hydrothermal synthesis. The structure of seed layers was changed by controlling their thickness and further annealing treatments at 200-1000 °C. Among several parameters of seed layer structure, the grain size and the surface crystal orientation were found to make a noticeable change in the morphology of ZnO nanorods. Thick ZnO nanorods were produced on large grains while densely aligned products were observed on the seed layer surface with c-axis orientation. In addition, at the early stage of synthesis, we observed ZnO nanorods with a diameter much smaller comparing to the size of grains consisting of poly-and single crystal. This explains that the nucleation of ZnO crystals start on c-axis oriented domains, and they grow in a length favorably and in diameter gradually, resulting in the formation of ZnO nanorods with the integration of tightly aligned products.

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Section: Methodsmentioning

confidence: 99%

Seed layer morphology influencing on ZnO nanorod growth by hydrothermal synthesis

Zhang

Honda

Ichikawa

2018

Trans. Mat. Res. Soc. Japan

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“…These materials are also compatible to produce heterojunctions and could open a new path in the manufacture of optoelectronic devices for different applications [18][19][20]. Usually, heterojunctions are not synthesized using methods in aqueous solutions; such methods involve a great difficulty in optimization, which has led to little use despite their low cost and the good quality of the films that they generate [21][22][23][24]. Weng et al [18] developed a CdS/PbSe heterojunction for high-temperature mid-infrared photovoltaic detector applications.…”

Section: Introductionmentioning

confidence: 99%

CdS/PbSe Heterojunction Made via Chemical Bath Deposition and Ionic Exchange Processes to Develop Low-Cost and Scalable Devices

et al. 2021

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Complete optoelectronic devices present major difficulties to be built by aqueous chemical deposition. In this work, a ITO/CdS/PbSe heterostructure was developed, depositing CdS over an ITO-coated substrate via a chemical bath deposition (CBD) technique. The next step involved the growth of a plumbonacrite film over CdS via CBD, where the film acted as a precursor film to be converted to PbSe via ion exchange. The characterization of each material involved in the heterostructure were as follows: the CdS thin films presented a hexagonal crystalline structure and bandgap of 2.42 eV; PbSe had a cubic structure and a bandgap of 0.34 eV. I vs. V measurements allowed the observation of the electrical behavior, which showed a change from an ohmic to diode response by applying a thermal annealing at 150 °C for 5 min. The forward bias of the diode response was in the order of 0.8 V, and the current-voltage characteristics were analyzed by using the modified Shockley model, obtaining an ideality factor of 2.47, being similar to a Schottky diode. Therefore, the reported process to synthesize an ITO/CdS/PbSe heterostructure by aqueous chemical methods was successful and could be used to develop optoelectronic devices.

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“…Indeed, highly oriented and densely distributed ZnO nanorods have often been grown on highly crystallized seed layers by conventional thermal treatment. 16,17) On the other hand, as mentioned above, the surface of the laser-irradiated area tends to be ablated to be granular, resulting in such products with small diameters compared with those grown on unannealed layers. 18,19) To investigate the crystal structure of seed layers, EBSD measurement was conducted.…”

mentioning

confidence: 99%

UV-laser-induced orientation of ZnO seed layer crystals for the growth of ZnO nanorods

Zhang¹,

Honda²,

Takayanagi³

et al. 2018

Jpn. J. Appl. Phys.

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We found that UV laser irradiation on a ZnO seed layer induced the crystal orientation at the surface, consequently leading to the growth of densely aligned ZnO nanorods on such a laser-irradiated layer. A single nanosecond pulse with a wavelength of 266 nm was irradiated to a ZnO seed layer on a glass substrate, and then, ZnO nanorods were synthesized on a laser-treated layer by a hydrothermal method. Electron microscopic observations revealed the growth of highly oriented ZnO nanorods on a laser-irradiated seed layer as well as the orientation of seed layer crystals to [0001].

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ZnO Growth Properties in ZnO/SnS Heterojunction by a Combination of ECD and CBD Method

Cited by 3 publications

References 15 publications

Seed layer morphology influencing on ZnO nanorod growth by hydrothermal synthesis

Seed layer morphology influencing on ZnO nanorod growth by hydrothermal synthesis

CdS/PbSe Heterojunction Made via Chemical Bath Deposition and Ionic Exchange Processes to Develop Low-Cost and Scalable Devices

UV-laser-induced orientation of ZnO seed layer crystals for the growth of ZnO nanorods

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